demonstrator

demonstrator — 名詞

1. a person whose role is to show other people how a product works or how a task is

1.名詞B2
釋義

示範者

現場展示產品或技術的人

a person whose role is to show other people how a product works or how a task is performed by doing it in front of them — for example, a salesperson in a store who makes drinks to display a blender, or a teaching assistant who runs a lab session for students.

例句

A kitchen-appliance demonstrator showed the shoppers how to chop vegetables in under ten seconds.

家電示範者向購物者展示如何在十秒內將蔬菜切好。

compound noun + shows + how-to clause; retail context

Kian, a cosmetics demonstrator, taught customers how to apply the new foundation.

Kian 擔任化妝品示範員，教顧客如何塗抹新上市的粉底。

同義詞
  • presenter

    focuses on the act of presenting, often used for TV or stage; less common for in-store product demos

  • instructor

    emphasises teaching step-by-step; more formal and usually implies a longer teaching relationship

  • exhibitor

    someone who displays products at a trade show or exhibition; broader scope than a one-on-one demo

反義詞
  • spectator

    watches the demonstration rather than performing it

用法筆記

At British universities, a demonstrator is often a postgraduate student who helps run practical sessions in science subjects. In retail, demonstrators are hired to present products in department stores or at trade shows.

常見錯誤

❌The new phone is a great demonstrator of the latest technology.
✅The new phone is a great demonstration of the latest technology.
💡Demonstrator always refers to a person; use demonstration for the thing that shows or proves something.

2. someone who joins an organised public event — such as a march or rally — to expr

2.名詞B2
釋義

示威者

參加遊行或集會表達立場的人

someone who joins an organised public event — such as a march or rally — to express strong feelings about an issue, either in opposition or in support.

例句

Thousands of demonstrators gathered outside the city hall to demand action on climate change.

數千名示威者聚集在市政廳外，要求政府對氣候變遷採取行動。

plural + gathered + to-infinitive purpose; typical news-report pattern

Rachid joined the demonstrators who were calling for safer working conditions at the factory.

Rachid 加入了示威者的行列，他們要求工廠提供更安全的工作條件。

同義詞
  • protester

    more specific — always implies objection or disagreement, whereas demonstrator can include supporters

  • marcher

    focuses on the form of action (walking in an organised line); less formal and less common in news headlines

  • activist

    implies ongoing, committed involvement in a cause, not just attendance at a single event

反義詞
  • bystander

    someone who is present but does not take part; neutral rather than expressive

用法筆記

Common in news reports and formal contexts. Unlike protester, which always signals opposition, demonstrator covers both those who oppose and those who support a cause — for example, pro-government demonstrators.

常見錯誤

❌A large crowd of demonstration gathered outside the building.
✅A large crowd of demonstrators gathered outside the building.
💡Demonstration is the event itself (a countable noun for marches/rallies); demonstrator is the person taking part.